In order to reduce the size of images to be used in a website, I reduced the quality to 80-85%. This decreases the image size quite a bit, up to an extent.
To reduce
For me, gexiv2 works fine:
#!/usr/bin/python3
from gi.repository import GExiv2
exif = GExiv2.Metadata('8snmhp4sjd75vdr27gbadolc003i.jpg')
exif.clear_exif()
exif.clear_xmp()
exif.save_file()
See also Exif manipulation library for python, which you linked, but didn't read all answers ;)
You can try loading the image with the Python Image Lirbary (PIL) and then save it again to a different file. That should remove the meta data.
from PIL import Image
image = Image.open('image_file.jpeg')
# next 3 lines strip exif
data = list(image.getdata())
image_without_exif = Image.new(image.mode, image.size)
image_without_exif.putdata(data)
image_without_exif.save('image_file_without_exif.jpeg')
You don't even need to do the extra steps @user2141737 suggested. Just opening it up with PIL and saving it again seems to do the trick just fine:
from PIL import Image
image = Image.open('path/to/image')
image.save('new/path/' + file_name)